Yes, these events are still in place. The problem and the question I was wondering is that often, and I saw another recent topic or someone was talking about it, the xp bonus is displayed at the end of the game, but it doesn't seem to be active.
The xp is neither doubled (Weekend) nor tripled (Wednesdays) in the mornings !
I saw it again yesterday. Inactive in the morning when I played, active in the afternoon. That's why I wanted to know if there was a start time, a specific time, or not.
Otherwise, the system is kinda * up and not working properly (to be fair).
I would also like to specify that I live in France. I don't think that's the case but if the event is set on US timetables, it could explain this delay.
See there : https://answers.ea.com/t5/General-Discussion/Triple-xp-bug/m-p/10057982#M21213